After hearing the news Demi Lovato wrote on Twitter, “#RIPCoryMonteith... So unbelievably tragic. Please #prayforLea..”

Lovato’s best friend Selena Gomez also shared a sweet message on Twitter saying the news "hurts."

"I love you Cory," Gomez wrote in a tweet accompanied by a picture of her and Monteith hugging. "Rest in peace. My thoughts and prayers are with you and your family."

The Canadian-born Monteith, who played star quarterback-turned-singer Finn Hudson on the Fox TV series, was found dead in his room on the 21st floor of the Fairmont Pacific Rim Hotel on Vancouver's waterfront at about noon Saturday, according to police.

Acting Vancouver Police Chief Doug LePard said there was no indication of foul play and "the cause of death was not immediately apparent."